// Copyright(c) 2015-present, Gabi Melman & spdlog contributors.
// Distributed under the MIT License (http://opensource.org/licenses/MIT)

#pragma once

#ifndef SPDLOG_HEADER_ONLY
#include <spdlog/details/backtracer.h>
#endif
namespace spdlog {
namespace details {
    SPDLOG_INLINE backtracer::backtracer(const backtracer& other)
    {
        std::lock_guard<std::mutex> lock(other.mutex_);
        enabled_ = other.enabled();
        messages_ = other.messages_;
    }

    SPDLOG_INLINE backtracer::backtracer(backtracer&& other) SPDLOG_NOEXCEPT
    {
        std::lock_guard<std::mutex> lock(other.mutex_);
        enabled_ = other.enabled();
        messages_ = std::move(other.messages_);
    }

    SPDLOG_INLINE backtracer& backtracer::operator=(backtracer other)
    {
        std::lock_guard<std::mutex> lock(mutex_);
        enabled_ = other.enabled();
        messages_ = std::move(other.messages_);
        return *this;
    }

    SPDLOG_INLINE void backtracer::enable(size_t size)
    {
        std::lock_guard<std::mutex> lock{mutex_};
        enabled_.store(true, std::memory_order_relaxed);
        messages_ = circular_q<log_msg_buffer>{size};
    }

    SPDLOG_INLINE void backtracer::disable()
    {
        std::lock_guard<std::mutex> lock{mutex_};
        enabled_.store(false, std::memory_order_relaxed);
    }

    SPDLOG_INLINE bool backtracer::enabled() const { return enabled_.load(std::memory_order_relaxed); }

    SPDLOG_INLINE void backtracer::push_back(const log_msg& msg)
    {
        std::lock_guard<std::mutex> lock{mutex_};
        messages_.push_back(log_msg_buffer{msg});
    }

    SPDLOG_INLINE bool backtracer::empty() const
    {
        std::lock_guard<std::mutex> lock{mutex_};
        return messages_.empty();
    }

    // pop all items in the q and apply the given fun on each of them.
    SPDLOG_INLINE void backtracer::foreach_pop(std::function<void(const details::log_msg&)> fun)
    {
        std::lock_guard<std::mutex> lock{mutex_};
        while (!messages_.empty())
        {
            auto& front_msg = messages_.front();
            fun(front_msg);
            messages_.pop_front();
        }
    }
}  // namespace details
}  // namespace spdlog
